Presidential authority Charles O. Jones provides a marvelously concise survey of the American presidency that’s packed with surprising observations about the way assertive leaders enhanced presidential power and how such factors as philosophy, relations with Congress, and outside events have all influenced presidential authority. He also sheds light on the political process of selecting presidents, from the days of the deadlocked conventions to...

Statistics is an exciting subject which uses deep theory and powerful software tools to shed light on and enable us to understand all aspects of our lives. Aimed at readers with no prior mathematical knowledge, this very short introduction explores and explains how statistics work, and how we can decipher them.